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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_VARIANT_NUMERIC_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_VARIANT_NUMERIC_H_
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace WTF {
class String;
} // namespace WTF
namespace blink {
class FontVariantNumeric {
STACK_ALLOCATED();
public:
enum NumericFigure { kNormalFigure = 0, kLiningNums, kOldstyleNums };
static WTF::String ToString(NumericFigure);
enum NumericSpacing { kNormalSpacing = 0, kProportionalNums, kTabularNums };
static WTF::String ToString(NumericSpacing);
enum NumericFraction {
kNormalFraction = 0,
kDiagonalFractions,
kStackedFractions
};
static WTF::String ToString(NumericFraction);
enum Ordinal { kOrdinalOff = 0, kOrdinalOn };
static WTF::String ToString(Ordinal);
enum SlashedZero { kSlashedZeroOff = 0, kSlashedZeroOn };
static WTF::String ToString(SlashedZero);
FontVariantNumeric() : fields_as_unsigned_(0) {}
static FontVariantNumeric InitializeFromUnsigned(unsigned init_value) {
return FontVariantNumeric(init_value);
}
void SetNumericFigure(NumericFigure figure) {
fields_.numeric_figure_ = figure;
}
void SetNumericSpacing(NumericSpacing spacing) {
fields_.numeric_spacing_ = spacing;
}
void SetNumericFraction(NumericFraction fraction) {
fields_.numeric_fraction_ = fraction;
}
void SetOrdinal(Ordinal ordinal) { fields_.ordinal_ = ordinal; }
void SetSlashedZero(SlashedZero slashed_zero) {
fields_.slashed_zero_ = slashed_zero;
}
NumericFigure NumericFigureValue() const {
return static_cast<NumericFigure>(fields_.numeric_figure_);
}
NumericSpacing NumericSpacingValue() const {
return static_cast<NumericSpacing>(fields_.numeric_spacing_);
}
NumericFraction NumericFractionValue() const {
return static_cast<NumericFraction>(fields_.numeric_fraction_);
}
Ordinal OrdinalValue() const {
return static_cast<Ordinal>(fields_.ordinal_);
}
SlashedZero SlashedZeroValue() const {
return static_cast<SlashedZero>(fields_.slashed_zero_);
}
bool IsAllNormal() { return !fields_as_unsigned_; }
bool operator==(const FontVariantNumeric& other) const {
return fields_as_unsigned_ == other.fields_as_unsigned_;
}
WTF::String ToString() const;
private:
FontVariantNumeric(unsigned init_value) : fields_as_unsigned_(init_value) {}
struct BitFields {
unsigned numeric_figure_ : 2;
unsigned numeric_spacing_ : 2;
unsigned numeric_fraction_ : 2;
unsigned ordinal_ : 1;
unsigned slashed_zero_ : 1;
};
union {
BitFields fields_;
unsigned fields_as_unsigned_;
};
static_assert(sizeof(BitFields) == sizeof(unsigned),
"Mapped union types must match in size.");
// Used in SetVariant to store the value in m_fields.m_variantNumeric;
friend class FontDescription;
};
}
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_VARIANT_NUMERIC_H_
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